﻿using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace ConsoleApp12
{
    class Circle : Shape
    {
        public double radius;
        public override void GetArea()
        {
            base.GetArea();
            Console.WriteLine("圆的面积为" + (3.14 * radius * radius));
        }
    }
}
